To shadowgirl is the act of joining a public gaming website and spamming it's forums and shoutbox with false information of yourself in an attempt to gain the attention of lonely males thus causing an explosion of drama. In most cases, the shadowgirl is likely an emotionally disturbed male and feeding it with attention will only fuel the aspie within it. Such false information is but not limited to saying you have a bionic leg after saving your friend, shooting yourself in the arm via ricochet from a soda can, falsely claiming stolen artwork is yours, diagnosing yourself with Multiple Personality Disorder and/or claiming you will kill yourself by drinking large amounts of water.

A woman who is kept in secret by a man. She is generally not introduced or known to any of the man's family, friends or associates and may serve as a mistress or as a person in lieu of, or in addition to, a spouse or mistress. Information shared about her to others may be vague or almost non-existant. Interaction with such a person is usually done in a tightly secluded environment with little, if any, public exposure.

I know Freddie likes to slip away now and again to spend time with his shadow girl. However, he's keeping any and everything about her totally secret. I've never seen them out together or even know her name. He definitely keeps her in the shadows.